10[This is] the burnt offering of each Sabbath on its Sabbath, in addition to the continual burnt offering and its libation.

יעֹלַ֥ת שַׁבַּ֖ת בְּשַׁבַּתּ֑וֹ עַל־עֹלַ֥ת הַתָּמִ֖יד וְנִסְכָּֽהּ:

The burnt offering of each Sabbath on its Sabbath: But not the burnt offering of this Sabbath on another Sabbath. For if they did not offer one up on this Sabbath, I might think that two should be offered up on the following Sabbath. Scripture therefore says, “on its Sabbath” to instruct us that if its day passes, its offering is canceled. — [Sifrei Pinchas 40]

in addition to the continual burnt offering: This refers to the additional [musaf] offerings, besides those two lambs of the continual burnt offering. And it teaches us that they [the additional sacrifices] may be offered only between the two continual offerings. Similarly, in the case of all the additional offerings it says, “In addition to the continual burnt offering” for this teaching. — [Sifrei Pinchas 40]

14And their libations: a half of a hin for each bull, a third of a hin for each ram, and a quarter of a hin for each lamb wine; this is the burnt offering of each new month in its month, throughout the months of the year.

And one young male goat…: All the additional-offering goats were brought to atone for defiling the Sanctuary and it holy sacrifices, as is outlined in the Tractate of Shevuoth (9a). The young male goat [brought] on the first day of the month differs insofar as with regard to it Scripture says, “to the Lord.” This teaches you that it atones for a case where there is no awareness [of the person’s uncleanness] either before [entering the Temple or eating sacrificial food] or after [the sin has been committed]. The only One aware of the sin is the Holy One, blessed is He. We derive [the law of] the other young male goats from this one. In the Aggadah , it is expounded thus: The Holy One, blessed is He, said, “Bring atonement for Me because I diminished [the size of] the moon.” - [Shev. 9a]